The boy and girl were born on Jan. 8. In the custom of Danish royalty, the babies will receive their names at their christening, which could be as long as three months from now.
“I’ve just been told that they were born on Elvis’s (Presley) birthday,” the prince said at a press conference just after the birth. “Then we’ll call one of them Elvis.”
The birth started spontaneously and lasted about five hours, said Princess Mary’s obstetrician, Dr. Morten Hedegaard. The birth team also included midwife Birgitte Hillerup, who said the princess, 38, had an epidural for pain. Frederik attended the birth.
The twins, along with older siblings Christian, 5, and Isabella, 3, are expected to visit their mother’s native Australia this year, perhaps for Christmas. The prince met the princess, nee Mary Donaldson, the Tasmanian-born daughter of a math professor, at a Sydney pub during the 2000 summer Olympics.
Chris Jackson/Getty Images